PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/06-22:42:50
G01     59.8           30.5               10.8 +/-    0.98      18.8 +/-    0.98  0.040 / 0.050
G07     142.5          22.5               16.0 +/-    2.17      33.2 +/-    2.17  0.050 / 0.040
G11     49.0           25.2                9.8 +/-    1.15      19.1 +/-    1.15  0.060 / 0.110
G13     262.7          35.0               15.9 +/-    2.15      25.1 +/-    2.15  0.060 / 0.090
G15     293.3          16.6               10.5 +/-    1.28      25.2 +/-    1.28  0.210 / 0.160
G17     252.5          72.6               14.3 +/-    0.33      14.9 +/-    0.33  0.300 / 0.220
G18     42.5           13.1                9.1 +/-    2.21      23.8 +/-    2.21  0.060 / 0.080
G19     233.0          50.4               15.4 +/-    2.49      19.3 +/-    2.49  0.060 / 0.070
G28     37.0           56.4               13.8 +/-    1.12      16.2 +/-    1.12  0.040 / 0.050
G30     143.4          49.7               14.7 +/-    0.39      18.6 +/-    0.39  0.040 / 0.050